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J Colloid Interface Sci. 2017 Nov 15;506:524-531. doi: 10.1016/j.jcis.2017.07.074. Epub 2017 Jul 20.

Facile preparation of fluffy N-doped carbon modified with Ag nanoparticles as a highly active and reusable catalyst for catalytic reduction of nitroarenes.

Author information

1
College of Chemistry and Chemical Engineering, Gansu Provincial Engineering Laboratory for Chemical Catalysis, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, Lanzhou University, Lanzhou 730000, PR China.
2
College of Chemical and Environmental Engineering, Pingdingshan University, PR China.
3
High School Affiliated to Northwest Normal University, Lanzhou, PR China.
4
College of Chemistry and Chemical Engineering, Gansu Provincial Engineering Laboratory for Chemical Catalysis, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, Lanzhou University, Lanzhou 730000, PR China. Electronic address: yuguiqin@lzu.edu.cn.
5
College of Chemical and Environmental Engineering, Pingdingshan University, PR China. Electronic address: hympdsu@163.com.
6
College of Chemistry and Chemical Engineering, Gansu Provincial Engineering Laboratory for Chemical Catalysis, Laboratory of Special Function Materials and Structure Design of the Ministry of Education, Lanzhou University, Lanzhou 730000, PR China. Electronic address: dongzhp@lzu.edu.cn.

Abstract

Novel fluffy smoke like mesoporous N-doped carbon (mNC) was prepared through a facile one-pot carbonization method using the low-cost melamine and polyacrylonitrile as the precursor materials. The obtained mNC material exhibits a high surface area, rich nitrogen content and can be used as an ideal catalyst support to fabricate noble metal modified nanocatalysts. Here, small Ag nanoparticles were supported on the mNC material with high dispersion to give the Ag/mNC nanocatalyst. The obtained Ag/mNC nanocatalyst was used in the catalytic reduction of nitroarenes and showed excellent catalytic activity, probably due to the small Ag NPs which highly dispersed on the fluffy mNC material that can enhance the accessibility and mass transfer, and subsequently enhance the catalytic activity. It is worth mentioning that, in the catalytic reduction of nitroarenes with halogenated groups, almost no dehalogenation phenomenon can be observed, which implies the superior catalytic chemoselectivity of the Ag/mNC nanocatalyst.

KEYWORDS:

Ag nanoparticles; Catalytic reduction; Fluffy N-doped carbon; Nitroarenes

PMID:
28756319
DOI:
10.1016/j.jcis.2017.07.074

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